Ebola death toll rises to 887

The number of people who have died following the world's worst Ebola outbreak has risen to 887, while more than 1,600 people in four west African countries have been affected.

The World Health Organisation today issued the new total, which takes into account deaths up until Friday.

The UN agency said there had been 358 deaths from Ebola in Guinea, 255 in Liberia, 273 in Sierra Leone and one in Nigeria.

Nigeria, the latest country to report an outbreak of the incurable disease, has now reported up to four cases. Three have been classed as "probable" Ebola, while another was "suspected", according to the WHO.

One of the Nigerian cases is a doctor who treated a man who died from Ebola in Africa's most populous nation last month.